Please help me out with this. I have this small application to load txt files into a sql db and it works fine with sqlite. When I ported to SQL I started getting 'parameter already declared' errors.. If anyone can help me reorganize this code, it would be great! I need to get the parameter definitions outside of the loops or something..

using System; 
using System.Data; 
using System.Data.SQLite; 
using System.IO;
using System.Text.RegularExpressions;
using System.Threading;
using System.Collections.Generic;
using System.Linq;
using System.Data.SqlClient;


namespace JohnDeereCMMDataParser 
{ 
    internal class Program 
    {


        public static List<string> GetImportedFileList()
        {
            List<string> ImportedFiles = new List<string>();
            using (SqlConnection connect = new SqlConnection(@"Server=FRXSQLDEV;Database=RX_CMMData;Integrated Security=YES"))
            {
                connect.Open();
                using (SqlCommand fmd = connect.CreateCommand())
                {

                    fmd.CommandText = @"SELECT FileName FROM Import;";
                    fmd.CommandType = CommandType.Text;
                    SqlDataReader r = fmd.ExecuteReader();
                    while (r.Read())
                    {
                        ImportedFiles.Add(Convert.ToString(r["FileName"]));

                    }
                }
            }
            return ImportedFiles;
        } 




        private static void Main(string[] args) 
        {




            using (SqlConnection con = new SqlConnection(@"Server=FRXSQLDEV;Database=RX_CMMData;Integrated Security=YES"))
            {


                con.Open();

                using (SqlCommand insertCommand = con.CreateCommand())
                {
                    Console.WriteLine("Connecting to SQL server...");
                    SqlCommand cmdd = con.CreateCommand();
                    string[] files = Directory.GetFiles(@"C:\Documents and Settings\js91162\Desktop\", "R.txt*", SearchOption.AllDirectories);

                    insertCommand.Parameters.Add(new SqlParameter("@FeatType", DbType.String));
                    insertCommand.Parameters.Add(new SqlParameter("@FeatName", DbType.String));
                    insertCommand.Parameters.Add(new SqlParameter("@Value", DbType.String));
                    insertCommand.Parameters.Add(new SqlParameter("@Actual", DbType.Decimal));
                    insertCommand.Parameters.Add(new SqlParameter("@Nominal", DbType.Decimal));
                    insertCommand.Parameters.Add(new SqlParameter("@Dev", DbType.Decimal));
                    insertCommand.Parameters.Add(new SqlParameter("@TolMin", DbType.Decimal));
                    insertCommand.Parameters.Add(new SqlParameter("@TolPlus", DbType.Decimal));
                    insertCommand.Parameters.Add(new SqlParameter("@OutOfTol", DbType.Decimal));


                        List<string> ImportedFiles = GetImportedFileList();

                        foreach (string file in files.Except(ImportedFiles)) 


                        {

                            var FileNameExt1 = Path.GetFileName(file);

                            cmdd.Parameters.Add(new SqlParameter("@FileExt", FileNameExt1));
                            cmdd.CommandText =
                                @" 
                    IF (EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'RX_CMMData' AND TABLE_NAME = 'Import')) BEGIN SELECT COUNT(*) FROM Import WHERE FileName = @FileExt; END";



                            int count = Convert.ToInt32(cmdd.ExecuteScalar());
                            con.Close();
                            con.Open();

                            if (count == 0)
                            {
                                Console.WriteLine("Parsing CMM data for SQL database... Please wait.");


                                insertCommand.CommandText =
                                    @"
                    INSERT INTO Import  (FeatType, FeatName, Value, Actual, Nominal, Dev, TolMin, TolPlus, OutOfTol, PartNumber, CMMNumber, Date, FileName) 
                    VALUES     (@FeatType, @FeatName, @Value, @Actual, @Nominal, @Dev, @TolMin, @TolPlus, @OutOfTol, @PartNumber, @CMMNumber, @Date, @FileName);";






                                string FileNameExt = Path.GetFullPath(file);
                                string RNumber = Path.GetFileNameWithoutExtension(file);

                                string RNumberE = RNumber.Split('_')[0];

                                string RNumberD = RNumber.Split('_')[1];
                                string RNumberDate = RNumber.Split('_')[2];

                                DateTime dateTime = DateTime.ParseExact(RNumberDate, "yyyyMMdd", Thread.CurrentThread.CurrentCulture);
                                string cmmDate = dateTime.ToString("dd-MMM-yyyy");
                                string[] lines = File.ReadAllLines(file);
                                bool parse = false;

                                foreach (string tmpLine in lines)
                                {


                                    string line = tmpLine.Trim();
                                    if (!parse && line.StartsWith("Feat. Type,"))
                                    {
                                        parse = true;
                                        continue;
                                    }
                                    if (!parse || string.IsNullOrEmpty(line))
                                    {
                                        continue;
                                    }

                                    Console.WriteLine(tmpLine);
                                    foreach (SqlParameter parameter in insertCommand.Parameters)
                                    {
                                        parameter.Value = null;
                                    }

                                    string[] values = line.Split(new[] { ',' });

                                    for (int i = 0; i < values.Length - 1; i++)
                                    {
                                        SqlParameter param = insertCommand.Parameters[i];
                                        if (param.DbType == DbType.Decimal)
                                        {
                                            decimal value;
                                            param.Value = decimal.TryParse(values[i], out value) ? value : 0;
                                        }
                                        else
                                        {
                                            param.Value = values[i];
                                        }
                                    }



                                }

                                insertCommand.Parameters.Add(new SqlParameter("@PartNumber", RNumberE));
                                insertCommand.Parameters.Add(new SqlParameter("@CMMNumber", RNumberD));
                                insertCommand.Parameters.Add(new SqlParameter("@Date", cmmDate));
                                insertCommand.Parameters.Add(new SqlParameter("@FileName", FileNameExt));
                                // 

                                insertCommand.ExecuteNonQuery();

                            }

                        }
                        Console.WriteLine("CMM data successfully imported to SQL database...");

                    }
                    con.Close();

            }
        } 
    } 
}

FYI - the PartNumber, CMMNumber, Date, etc at the bottom are pulled from the file name and I need it in the table next to each respective record.